We're dividing 15303454 by 355 
We want to figure out the number of times 15303454 can be divided by 355.

On to step 1:
When dividing 1 by 355, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 355

On to step 2:
The number 355 fits into 15 0 times, leaving a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 355

Advancing to step 3:
355 can be fit into 153 0 times, resulting in a remainder of 153.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 153 after subtracting 0 from 153.
Grab the next digit (0) from the dividend, add it to 153, then carry on: 1530 / 355

Advancing to step 4:
The number 355 fits into 1530 4 times, leaving a remainder of 110.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 1420 from 1530, we get 110.
Take the next digit (3) from the dividend and append it to 110, then repeat: 1103 / 355

Going ahead to step 5:
When dividing 1103 by 355, we get 3 with a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtract 1065 from 1103 to get 38.
Bring next digit (4) of the dividend behind the 38 and repeat the process: 384 / 355

Step 6:
If we divide 384 by 355, we get 1 and a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 431.0
If we take 355 away from 384, we end up with 29.
Fetch the next digit (5) from the dividend, attach it to 29 and continue: 295 / 355

Let's proceed to step 7:
When dividing 295 by 355, we get 0 with a remainder of 295.
The number 0 becomes the next digit in our result. 
Result so far: 4310.0
Subtract 0 from 295 to get 295.
Grab the next digit (4) from the dividend, add it to 295, then carry on: 2954 / 355

Advancing to step 8:
If we divide 2954 by 355, we get 8 and a remainder of 114.
Use 8 as the next digit of our solution. 
Result so far: 43108.0
Subtract 2840 from 2954 to get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 9:
If we divide 1140 by 355, we get 3 and a remainder of 75.
The next digit of our result is 3. 
Result so far: 43108.3
The remainder is 75 after subtracting 1065 from 1140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 10:
If we divide 750 by 355, we get 2 and a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 43108.32
Deduct 710 from 750 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 11:
When dividing 400 by 355, we get 1 with a remainder of 45.
Put 1 as the next digit of the answer. 
Result so far: 43108.321
If we take 355 away from 400, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 12:
355 can be fit into 450 1 times, resulting in a remainder of 95.
Record the quotient 1 as the next digit in the result. 
Result so far: 43108.3211
If we subtract 355 from 450, we get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

After the division, we end up with 43108.3211 and a remainder of 0.00095.